Because one of them (Earth) is based on reality, and the other is a poorly done conceptual render because no human actually knows the shape of the landmasses on that planet on account of having never been there.
Have they considered zooming their telescope in enough until they can see for themselves firsthand?
I know you're probably joking but even the best telescopes can only directly image a planet that's like 10 times the mass of Jupiter and even then it's only like two pixels.
The hard part is that the stars create so much glare and planets are so small and faint that it's really REALLY hard to zoom in on them. Even with very powerful telescopes. It's probably straight up impossible actually. Like you can see them and get an idea of what they're made of (light spectrum analysis) but you're not going to be able to make out fine details like what the landmasses look like.
There's no way in hell we have the resolution to see continents in another star system.
Considering we only know it's there because it slightly dims the light from its star as it crosses during its orbit, you would be correct. At that distance, we would never see light bouncing off the actual planet. Even the star is basically a single pixel. We can estimate its size and orbit based on how quickly it crosses in front of the star and how much the light dims, and using those two numbers we can estimate its distance from Kepler 452.
I thought they could also see atmospheric composition as it passes in front of the star, no? Having that info and the data you’ve just mentioned they postulate if it’s habitable or not. Obviously not seeing any detail at all about land mass shapes, but perhaps composition? I’m not a spaceologist, so I’m only musing.
Yeah, but it's still just a single pixel of light from the star. It just changes color slightly when the planet passes in front of it and the atmosphere gases absorb certain characteristic wavelengths.
How did they get it to pose next to earth for this photo?
Kepler-452b was having a private conversation with Australia when the photographer snuck up and got the candid photo.
Unfortunately Kepler-452b was embarrassed by having the intimate moment interrupted and left in a hurry.
Though their conversation was pleasant, the photographer ruined the mood and numbers were not exchanged.
...because Slartibartfast didn't hand design them like he did for earth?
There are not enough fidly-bits on this new planet
Because the computer-generated images that symbolize said other planets are generally done with some shitty-shit stupid noise algorithm to generate the surface rather than anything decent (well, at least it's not uniform noise), whilst the ones for planet Earth just use existing map data for the Earth surface.
As it so happens I've been working on a game that has planets, so here's an example generated with better algorithms:
PS: also note that for game purposes, the athmosphere is unrealistically thick as a proportion of planetary radius, purelly because it looks better. A lot of choices in game making are mainly artistic freedom which at first people with a Science or Engineering background tend to shy away from "because it's not how things are".
I think it's also that we choose the most photogenic angle for earth, if you pick a random angle of earth it sometimes doesn't look as good.
e.g.
do you have an algorithm for picking a photogenic angle for your game?
i love the Himalaya doing a cute smile
Fermi paradox solution: aliens approach from a direction where the first part they see is the Philippines and Indonesia, and just say "nah I'm not learning all those names of islands", and leave.
Or they just approach from this angle and go "Ah, nothing here" and move on
They dodged a bullet!
Lazy Aliens.
Earth 2 exists, except it’s twice the size of Earth and could be a scorched wasteland for all we know.
Whenever I see an update on these sort of articles, the planet always ends up being a tide-locked hell-scape full of toxic chemicals.
https://xkcd.com/2202/ moment
Slightly unrelated but I got a solid chuckle out of the different modes they added in the drop down on the XKCD website under teh comic, Space Opera mode is my favorite.
* slaps sphere *
"You can fit so much Perlin noise on this baby."
Bro that's a PRIME sailing planet if I've ever seen on.
Earths oceans shores are largely extremely boring linear beaches. Especially along the Atlantic.
This plant would be prime for small cheap hobby costal sailing
They’d probably like to come colonize our planet, but with 2x the gravity of Earth, I bet it’s hard to build a rocket that can actually get them into space, much less travel 1800 light years.
Don't worry. If us humans showed up on Kepler-452b tomorrow and it had a breathable atmosphere, those lakes would probably be gone in a few hundred years.
Yeah. Those astronauts would be super thirsty after that trip
So would the breathable atmosphere.
Am I the only one around here who doesn’t think it looks like shit?
Geoscentific and ecological implications aside, they have a huge ass continent with multiple giant lakes and small peninsulas all around. With a comparable vegetation to earth, this would look amazing in person, I believe.
Are we landmass shaming now?
Artists rendering
Documentaries and science communication in general has always been waaaay too fucking lax on properly disclosing artists' renderings. Every field suffers from it, but I have to say astrophysics and astronomy are the absolute worst about it.
Here, go nuts:
https://calandiel.itch.io/gleba
Best freely available, scientifically based planet generator I've been able to find.
Anybody by chance know if there’s a Kepler-452b map for Civ V?
As someone who used mapmaking software for decades I agree they all look randomly generated.
So thats where rimworld got the shitty planet generation from. Seriously, I want big contiguous oceans. Not like I can use the vast majority of the planet anyway.
A place for majestic STEMLORD peacocking, as well as memes about the realities of working in a lab.
Rules
This is a science community. We use the Dawkins definition of meme.
